Three-dimensional assemblies of graphene prepared by a novel chemical reduction-induced self-assembly method

Nanoscale ◽  
2012 ◽  
Vol 4 (22) ◽  
pp. 7038 ◽  
Author(s):  
Lianbin Zhang ◽  
Guoying Chen ◽  
Mohamed Nejib Hedhili ◽  
Hongnan Zhang ◽  
Peng Wang
Keyword(s):  
Self Assembly ◽  
Chemical Reduction ◽  
Three Dimensional ◽  
Assembly Method

Microwave Irradiation of Graphene Aerogel and Its Use on the Electromagnetic Interference Shielding of BMI Nanocomposites

NANO ◽  
2020 ◽  
Vol 15 (11) ◽  
pp. 2050143
Author(s):  
Bowen Feng ◽  
Wei Li ◽  
Fei Xue ◽  
Xingyu Tong ◽  
Jiaying Li ◽  
...  
Keyword(s):  
Self Assembly ◽  
Electromagnetic Interference ◽  
Chemical Reduction ◽  
Three Dimensional ◽  
Microwave Treatment ◽  
Shielding Effectiveness ◽  
Electromagnetic Interference Shielding ◽  
Graphene Aerogels ◽  
Electromagnetic Interference Shielding Effectiveness ◽  
Emi Se

In this work, graphene aerogels (GAs) with three-dimensional interconnected networks were prepared by chemical reduction and self-assembly of graphene oxide sheets. After microwave treatment, obtained microwave reduced graphene aerogels (MRGAs) were used in the preparation of bismaleimide (BMI) composites. The results show that the microwave treatment significantly enhanced the quality of GAs, and the three-dimensional networks in the GAs were well retained. Moreover, the MRGAs were highly efficient in endowing BMI with high electrical conductivity and excellent electromagnetic interference shielding effectiveness (EMI SE). The conductivity of MRGA/BMI composites was 42–68% higher than that of GA/BMI composites. When the filler content is 1.6 wt.%, the EMI SE of MRGA/BMI composite was 32.3% higher than that of GA/BMI composite in the X band.

A self-assembly method for the fabrication of a three-dimensional (3D) polypyrrole (PPy)/poly(3,4-ethylenedioxythiophene) (PEDOT) hybrid composite with excellent absorption performance against electromagnetic pollution

2016 ◽  
Vol 4 (1) ◽  
pp. 82-88 ◽  
Author(s):  
Fan Wu ◽  
Mengxiao Sun ◽  
Wanchun Jiang ◽  
Kun Zhang ◽  
Aming Xie ◽  
...  
Keyword(s):  
Self Assembly ◽  
Hybrid Composite ◽  
Three Dimensional ◽  
Synthesis And Characterization ◽  
Assembly Method ◽  
Electromagnetic Absorption ◽  
Absorption Performance ◽  
Electromagnetic Pollution

Here we report the synthesis and characterization of a 3D-PPy/PEDOT composite, and examine its electromagnetic absorption (AE) performance.

Using organic solvent absorption as a self-assembly method to synthesize three-dimensional (3D) reduced graphene oxide (RGO)/poly(3,4-ethylenedioxythiophene) (PEDOT) architecture and its electromagnetic absorption properties

RSC Advances ◽  
2014 ◽  
Vol 4 (91) ◽  
pp. 49780-49782 ◽  
Author(s):  
Fan Wu ◽  
Yuan Wang ◽  
Mingyang Wang
Keyword(s):  
Organic Solvent ◽  
Self Assembly ◽  
Three Dimensional ◽  
Absorption Properties ◽  
Self Assembling ◽  
Assembly Method ◽  
Electromagnetic Absorption ◽  
Solvent Absorption ◽  
Reduced Graphene ◽  
Promising Application

A novel self-assembling 3D-RGO/PEDOT architecture has been synthesized through organic solvent absorption and gentle heating. It gives a promising application in electromagnetic absorption.

Template-Free Synthesis and Properties of Polyaniline Nanostructures Doped with Different Oxidants

2011 ◽  
Vol 688 ◽  
pp. 334-338 ◽  
Author(s):  
He Yang ◽  
Yun Ze Long ◽  
Hang Jun Ding
Keyword(s):  
Self Assembly ◽  
Room Temperature ◽  
Three Dimensional ◽  
Ammonium Persulfate ◽  
Molar Ratio ◽  
Temperature Conductivity ◽  
Room Temperature Conductivity ◽  
Assembly Method ◽  
Temperature Dependence Of Conductivity ◽  
Template Free

In this work, we report on conducting polyaniline (PANI) nanostructures synthesized by a simplified template-free self-assembly method, which are doped with different oxidants such as ammonium persulfate (APS), FeCl3, Fe(NO3)3, and Fe2(SO4)3. It is found that the morphologies of the as-prepared PANI nanowires are dependent on the oxidant and the molar ratio of aniline to oxidant. The PANI nanostructures are semiconducting with room-temperature conductivity ranging from 10-2to 100S/cm, and the temperature dependence of conductivity follows three-dimensional Mott variable range hopping (3D Mott-VRH) model. In addition, the PANI pellets exhibit hydrophilic behavior.

scholarly journals Superior adsorption of 3D nanoporous architectures for Ni(ii) ions adsorption using polyvinyl alcohol as cross-linking agent and adsorption conveyor

RSC Advances ◽  
2018 ◽  
Vol 8 (15) ◽  
pp. 7899-7903 ◽  
Author(s):  
Haibo Wang ◽  
Wei Wang ◽  
Yufen Zhao ◽  
Zhiwei Xu ◽  
Lei Chen ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Polyvinyl Alcohol ◽  
Self Assembly ◽  
Large Scale ◽  
Low Cost ◽  
Three Dimensional ◽  
Cross Linking ◽  
Cost Approach ◽  
Assembly Method

In this study, we report a large-scale and low cost approach for the synthesis of three-dimensional (3D) polyvinyl alcohol/carbon nanotubes nanoporous architecture using self-assembly method.

scholarly journals Three-Dimensional Graphene Composite Containing Graphene-SiO2 Nanoballs and Its Potential Application in Stress Sensors

Nanomaterials ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 438 ◽  
Author(s):  
Bowei Zhao ◽  
Tai Sun ◽  
Xi Zhou ◽  
Xiangzhi Liu ◽  
Xiaoxia Li ◽  
...  
Keyword(s):  
Self Assembly ◽  
High Performance ◽  
Three Dimensional ◽  
Chemical Vapor ◽  
High Sensitivity ◽  
Measurement Range ◽  
Recoverable Strain ◽  
Assembly Method ◽  
Stress Sensors ◽  
One Step

Combining functional nanomaterials composite with three-dimensional graphene (3DG) is a promising strategy for improving the properties of stress sensors. However, it is difficult to realize stress sensors with both a wide measurement range and a high sensitivity. In this paper, graphene-SiO2 balls (GSB) were composed into 3DG in order to solve this problem. In detail, the GSB were prepared by chemical vapor deposition (CVD) method, and then were dispersed with graphene oxide (GO) solution to synthesize GSB-combined 3DG composite foam (GSBF) through one-step hydrothermal reduction self-assembly method. The prepared GSBF owes excellent mechanical (95% recoverable strain) and electrical conductivity (0.458 S/cm). Furthermore, it exhibits a broad sensing range (0–10 kPa) and ultrahigh sensitivity (0.14 kPa−1). In addition, the water droplet experiment demonstrates that GSBF is a competitive candidate of high-performance materials for stress sensors.

PHOTOLUMINESCENCE OF ZINC OXIDE INVERSE PHOTONIC CRYSTAL

2011 ◽  
Vol 10 (01n02) ◽  
pp. 171-175 ◽  
Author(s):  
SUNITA KEDIA ◽  
R. VIJAYA
Keyword(s):  
Zinc Oxide ◽  
High Temperature ◽  
Photonic Crystals ◽  
Self Assembly ◽  
Chemical Method ◽  
Sol Gel ◽  
Three Dimensional ◽  
Chemical Route ◽  
Vacancy Defects ◽  
Assembly Method

Three-dimensional photonic crystals prepared by self-assembly method from polymethyl methacrylate colloids are infiltrated with zinc oxide ( ZnO ) prepared using sol–gel technique. The polymer template is removed by chemical method and heat treatment to obtain inverse photonic crystals of ZnO . The inverse crystal fabricated by the chemical method is further heated at high temperature and the X-ray diffraction establishes the presence of single-crystalline ZnO . The photoluminescence is recorded from the inverse photonic crystals by exciting them with He–Cd laser at 325 nm. The as-prepared inverse crystals show only UV emission while the inverse crystal obtained by the chemical route and treated at high temperature shows the visible emission due to oxygen vacancy defects.

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